Choose the answer that best matches the word in italics:
the coffee cup sat “precariously” on the edge of the table, so the slight brush of the dog’s tail sent it crashing to the floor.
a. briefly
b. insecurely
c. permanently
d. solidly

Explanation:

Because in the statement, the coffee cup is misplaced, it's in a not secure position, that's why insecurely is the best match. The other part confirms this situation when says ''...the slight brush...'', which means that every touch could crash the cup.

pls include the text ur reading

answer; (d) i believe the best answer is ; ///people said that man could not fly, but in 1903, orville and wilbur wright made the first sustained powered flight in a heavier- than-air machine;